[CentOS] intel_iommu=on => No root device found

Hi all, for some reaseon, my message wasn't published. Second try, this time without the giant attachment. I have an Intel server (SR2600URBRPR) in front of me. The disks in my server are connected via PCI card (Adaptec RAID 3405). Now I would like to passthrough a PCI-E graphics card to a KVM

Re: [CentOS] intel_iommu=on => No root device found

AID controller (Adaptec RAID 3405). It's kind of a critical component, so I can not disable it. ;) Does this mean, it's impossible to make IOMMU work on this machine? -- nilscaspar.ch On 30.01.2013, at 05:52, Gordon Messmer wrote: > On 01/29/2013 01:16 PM, Nils Caspar wrote: >>

Re: [CentOS] intel_iommu=on => No root device found

> Try booting the system without intel_iommu=on, but with the IOMMU > enabled in the bios. Something has to be at 05:01.0. Do you see any > Ricoh devices anywhere in lspci output? That's exactly what I did. I uploaded the full output of `lspci -vv`: http://nilscaspar.ch/centos-lspci.txt Chee

Re: [CentOS] intel_iommu=on => No root device found

I did some experimenting with and without the RAID card installed. There are no DMAR errors, when the RAID card isn't present... Too bad! Anyone a suggestion for a RAID card that works with IOMMU? Nils -- nilscaspar.ch On 30.01.2013, at 23:21, Nils Caspar wrote: >> Try booting

Re: [CentOS] intel_iommu=on => No root device found

> I did some experimenting with and without the RAID card installed. There are > no DMAR errors, when the RAID card isn't present... Too bad! Just got this confirmed by Adaptec Support: > VT-D is not supported with our Adaptec RAID Controllers. You will need to > disable this in the BIOS of th